John e



Nov. 18, 1,516,019

J. E. KNAPP FUELREGULATING DEVICE FOR INTERNAL COMBUSTION ENGINES F1106 Ii-Y 19. 1923 .lphn E K11 app 6H0: mug" Jwwnlox Patented Nov. 18, 1924-.

UNITED STATES JOHN E. KNAPI'F. OF CLARION. IPENITISYLVANIA.

FUEL-EEGULATIING DEVICE FOR INTERNAL-COMBUSTION ENGINES.

Application filedMay 19, 1923.

To all whom it may concern Be it known that l. Jenn i l. KNArr. a citizen of the United States. residing at Clarion, in the connty of Clarion and State of Pennsylvania, have invented certain new and useful Improvements in Fuel-Regulating Devices for Internal-Combustion l lngines. of which the following is a specification.

This invention. relates to improvements in carburetors.

The primary object of this invention is the provision of a device for effectively controlling the use of manufactured or natural gas as a fuel for internal combustion engines, whereby quantities of the fuel may be supplied to the cylinders of an internal combustion engine in correct quantity according to the capacity of the engine cylinders and the operation of the engine.

A further object of the invention is the provision of a relatively simple and compact device for the effective control of manufactured and natural whereby the same may be made practical for use as a fuel for internal combustion engines. in that correct quantities of the fuel may be delivered to the internal combustion engine cylinders without the necessity of placing the fuel under excessive pressure in order to supply the amount required for a fast working engine.

A further object of this invention is the provision of a device for effectively supplying fuel to an internal combustion engine to prevent the formation of a vacuum in the fuel line thereof incident to engine suction.

Other objects and advantages of this invention will be apparent during the course of the following detailed description.

In the accompanying drawing. forming a part of this specification, and wherein similar reference characters designate corresponding parts throughout the several views:

Figure l is a cross sectional view taken through the improved device showing the same as used in connection with an in ternal combustion engine whose piston is about to make an intake stroke.

Figure 2 is a view substantially similar to Figure 1, showing the cooperating details of the improved device as positioned when the engine piston has about reached the end of an intake stroke.

Serial No. 640,175.

Figure 3 is a cross sectional view taken substantially on the line 3-3 of Figure 2.

Figure -:t is a. perspective View of details of a valve mechanism used in connection with this invention.

In the drawing. wherein for the purpose of illustratitm is shown the preferred embodiment of this invention, the letter A may generally designate the improved device. which is adapted for use in connection with the internal combustion engine B, whereby fuel in proper quantity and quality may be delivered to the cylinders of said engine for combustion.

Referring to the internal combustion en-- gine B. the same may be of any type. either of the two or four cycle system of operation. and may include the jacket or block 15. having intake and exhaust manifolds 16 and 1'? respectively connected thereto. and in connection with which manifolds suitable poppet or control valves 18 and 19 respectively may be provided for the inlet and exhaust of fuel and exploded gases with respect. to the cylinder chamber 22 of the engine B. Any approved piston mechanism 23 may be employed in connection with each cylinder of the engine B.

Referring to the device A, the same preferably is constructed of galvanized sheet. material, cast iron aluminum, or any other suitable material including a cylindrical shaped housing 25, which may include a top wall 26. and a detachable bottom wall 27. and which provides a compartment 28 enclosed therein. A cylindrical shaped container 29. entirely open at the upper end 30 thereof. rests upon the bottom 27 of the housing 25. This container 29 provides a pocket or compartment 32 therein of a capacity or volume which is substantially equal to the effective fuel volume of a cylinder chamber 22 of the internal combustion engine with which the improved device A is to be connected. The container 29 is preferably of uniform diameter throughout the length thereof and is of considerably less diameter than the diameter of the housing 25, so that the same is annularlyspaced from the housing 25, as disclosed in the compartment 28 of the housing 25. At its upper end 30, the container is open and spaced from the top wall 26 of the housing 25, so that fuel vapors or the like, passing through the compartment 28 may readily enter the open. top of the container 29 for flow into w on as plane in the lower end of h 28, and which is per ed so t )I t flow tl'ieretl'roin into saw. he

r natural al lowlnent 25% e? is preferred that inanntacti gas he use-C as fuel nniler on ing pressure so that th within the compartnient container compartment t 30 thereof. The tithe vides a passee'ewar with the container 1 lower end thereof. r .s t a dially exterior of the llOHSl u i it outer end is preiterahly provided with a trusto-conical head i one or more openings conical shell 4i") is pm oscillatory attachment eltter "trusto-conical end &5 oi. the i and being provided with adapted for cooperation witi openings 4-41; oil the head 5 t valve action whereby of container ninnication. T

which may provide -l therein. Lott-Listoy nrorided tor orlr upon the i. ripe or tnhe 37 rlis i? therein, the ports or to provide a her upon the *rnsttwconieel slot.- 48 preferably L'ircnn1terei "til 7 provided in the shell 4:6 into which 49 ot thehcad projects.

The prov'sion ot the tnhe :37 is tor the escape of air troln the container conipnrtincnt 32, as the incl enten-i the ripper end ot the compartment to displ: c: said air. lfiv means of the valve which the shell opcrntin upon the head 4-3 provider-n it is possible regulate the ease w th wiieh the air may lie expelled by the di, notion of fuel entering the cont; n LJI'OYlClG n :tnel centrl proved type in xardly oi the air tube l val e oi. the

the int nistion enahl r proninnitfold 16 of or he gine B, the honsnr i. i .3 r vided-with a fuel exit tnhe one end of whlch connnin mates w t the lower end of '1 the housing compartment t end of whlch rnny he erinnged in the intone mnmtold 16 whereby the honsnig compartmeet 28 atits lower end is in c inzminication the intake manifold 16 to permit tloiv o't fuel into the cylinder chamber In Greer to permit the volume of fuel which may he in the container compartment 39 to be readily displaced there'lroin incident to the suction action oi. the intake stroke of the engine pistoin it is preferred to provide an air inlet valve in the lower end ti o housing 25 by means of which air may directly enter the lower end oi the container con'ipartnient ihis valve means may ii cliide a spider (it) connected upon the hottorn ot the housing 25,, and providing a valve port or passageway (32 through which air may flow into the lower end of the container compartment A valve (33 is pretlie 'ahl'v provided tor the port 61 2 being mounted upon a stem er: reciprocihl v carried by the spider no on. the same -:is as the container The lower end of he stein may be screw threaded, and to tor the ease or ditlicnlt v o't lifting he head 63 troin its sent over the port 3 "1 1S preferred to provide a clamping not 5 upon the screw threaded end of the stern 3o, intermediate which, and the spider (it) a spiral spring; es is positioned, which may he adjusted as to con'ipression in means oi? the nut 61 so that the *nlve (5% ma he seated in the port (552 with varying); force. ltis prete ed :hat the alve head (it; he of snhstain ie f t il

t f), in i iii'llic'ient :in'ionnt to equal mo oi tool which is displaced from H or COT'k'IPEIlYJDQl'liZ P52, hr the suction it the engine piston. Q1 order that the tnel which pat-sees from the tnhe into the intr'ihe inni'iitold may hare the proper consistency :tor explosive 'mrposes, it preterred to provide tor the entrance 0t air therewith. This may he e iected by providing a port it) in the tnhe 53, and about which iZlJlPQ 55 and over the port 0 therein, a Valve sleeve Tl. may he provided. heing connected to the tube hv 1119:1116 ot a pin 72 operating within a slot in said sleeve Tl so that an opening Tat in said sleeve may no selectivel diligent], with the port Y0 to pe 1' any desired :irnonnt ot to he miner wi h the fuel for intake. lleterring o the operation of 1 device, and hearing; in niine. hat the primary pair-- I oi the some is to permit t 1e use (it nzfiiiiiliectnred and natural gas under new pressures so that the "tine he suplied iii volume sntiicient to take care ot 1e heat of the Miner the tnel enters the nier compnrtinent at the lower end t.:1er-eo:t as above desc al and arises and passes into the COL ,rtieent 35 ill the in end of container Flt displecinor anv air or other DLBCllllHl which may be in the Lil Bit

Iii

container compartment 32 by forcing the same outwardly from the lower end thereof thru the tube 37; the valve at the outer end of said tube 37, of course, being open. Upon the intake stroke of a piston in the internal combustion engine 13. the suction incident thereto will draw fuel from the lower end of the housing compartment 28 through the tube or conduit 53. This fuel will necessarily have to pass rapidly into the cylinder chamher and not only withdraw the quantity of fuel from the compartment 28 about the container 29, but draws the supply of gas or fuel which may be in the container compartment 32 therefrom, and which gas of course flows into the compartment 28 until the end of the suction incident to the intake stroke. lVere it not for the provision of the air valve in the lower end of the container com partment 32, a vacuum would be created in said compartment incident to displacement of the gas therefrom. However, as the valve seating spring 68 is of light construction, the valve seating tendency of the same is easily overcome by withdrawal of gas from the compartment 32 so that the valve rises to permit air to enter the lower end of the compartment 32 to take the place of the intake gas or fuel. At the end of the suction stroke. the valve head 63 of course seats itself, and the fuel or gas entering the compartment 28 through the line 35 will again flow into the upper end of the compartment 82-, to displace the air or other medium therein. by forcing said air or other medium through the exit tube 37.

From the foregoing description of this invention it is apparent that a device has been provided, by means of which a body of fuel may be effectively regulated both as to quantity required for engine intake, and as the quality of the same.

Various changes in the shape, size and arrangement of parts may be made to the form of invention herein shown and dc scribed. without departing from the spirit of the invention or the scope of the claims.

I claim:

1. A. device of the class described comprising a housing, a container in the lions ing open at its top, fuel inlet means in the housing to permit rise of fuel into the housing for flow into the container through the top opening, fuel outlet means in the lions ing, and valve means at the lower end of the container to permit entrance or exit of a medium as the volume of fuel in the container is decreased or increased.

2. A device of the class described coinprising a housing, an open topped container disposed within said housing and providing compartments therein, fuel inlet means for the lower end of the housing compartment whereby fuel may rise upwardly within said compartment for flow into the container compartment through the open end of the container compartment, fuel exit means for the housing compartment, air inlet means for the lower end of the container compartment, an air outlet means for the lower end of the container compartment.

3. A device of the class described comprising a housing, a container disposed within said housing in spaced relation to the side walls thereof and providing an inner container compartment and outer housing compartment, said container compartment being open at one end thereof to communicate the compartments of the container and the housing. fuel inlet means for the compartment of the housing whereby fuel may flow into the housing compartment at the end thereof opposite to the intercommunicating ends of the compartments, air inlet and outlet means for the container compartment disposed therein remote from the end which communicates with the housing compartment, fuel outlet means for the housing compartment at the end thereof opposite to the communication of said compartments, and air inlet valve means in said last mentioned means to regulate the consistency of fuel. passing therethrough.

t. In a carburetor device for internal combustion engines. the combination of a container having a fuel entrance and exit opening therein and a valve controlled air inlet to control entrance of air according to increase or decrease of the volume of fuel in the container, and an annular wall in said container terminating in spaced relation to the top thereof and dividing the container into inner and outer compartments the capacity of the inner compartment being substantially the same as the capacity of an engine cylinder into which the fuel flows, and an air outlet pipe extending from the lower end portion of the inner compartment and externally of said container whereby air in the inner compartment may be forced out. of the inner compartment by fuel entering the inner compartment through the open upper end thereof.

5. Fuel reg-[dating means for internal combustion engines comprising an enclosed housing. a conduit communicating at one end of the housing with the intake manifold of an engine to which the same is attached for flow of fuel from the housing into the intake manifold, means in said conduit for regulating the inlet of air thereto for admixture with the fuel pouring therethrough. a container supported in said housing and providing inner and outer compartments therein. the inner compartment being open at its upper end and communicating with the outer compartment at an end thereof remote from said conduit, means for inlet of fuel into the outer compartment about said container at an end of the housing adjacent said conduit, inetuis including a port and control Valve therefor for inlet of air into the inner compartment at an end tl'iereel opposite to the intercommuniceting point oi? the inner and outer compartments, said. port and valve head being substantially of the same size as the intake port and its control valve of the engine cylinder into which the tuel flows from said housing; and an air outlet conduit communicating with the inner compartment adjacent said air inlet port and valve.

JOHN E. KNAPP. 

